EM 1110-2-1100 (Change 1)
31 Jul 03
SURFACE GRAVITY WAVE (PROGRESSIVE)
(1) this is the term which applies to the WIND WAVES and SWELL of lakes and oceans, also called SURFACE
WATER WAVE, SURFACE WAVE or DEEP WATER WAVE, (2) a progressive GRAVITY WAVE in which the
disturbance is confined to the upper limits of a body of water. Strictly speaking this term applies to those progressive
GRAVITY WAVES whose celerity depends only upon the wave length.
SURFACE WATER WAVE
See SURFACE GRAVITY WAVE (PROGRESSIVE).
SURGE
(1) The name applied to wave motion with a period intermediate between that of the ordinary wind wave and that of
the tide, say from to 60 min. It is low height, usually less than 0.9 m (3 ft). See also SEICHE. (2) In fluid flow, long
interval variations in velocity and pressure, not necessarily periodic, perhaps even transient in nature. (3) see STORM
SURGE.
SURGING BREAKER
See BREAKER.
SURVEY, CONTROL
A survey that provides coordinates (horizontal or vertical) of points to which supplementary surveys are adjusted.
SURVEY, HYDROGRAPHIC
A survey that has as its principal purpose the determination of geometric and dynamic characteristics of bodies of
water.
SURVEY, PHOTOGRAMMETRIC
A survey in which monuments are placed at points that have been determined photogrammetrically.
SURVEY, TOPOGRAPHIC
A survey which has, for its major purpose, the determination of the configuration (relief) of the surface of the land
and the location of natural and artificial objects thereon.
SUSPENDED LOAD
(1) The material moving in suspension in a fluid, kept up by the upward components of the turbulent currents or by
colloidal suspension. (2) The material collected in or computed from samples collected with a SUSPENDED LOAD
SAMPLER. Where it is necessary to distinguish between the two meanings given above, the first one may be called the "true
suspended load."
SUSPENDED LOAD SAMPLER
A sampler which attempts to secure a sample of the water with its sediment load without separating the sediment
from the water.
SUSTAINABLE BEACH
A beach area that is now and will continue to receive sufficient sediment input over a long period (years or decades)
to remain stable. Such sediment input can be through either natural supplies of sediment or various forms of mechanical
beach nourishment (placement by hydraulic dredge, land haul of material, nearshore deposition, etc.)
SWALE
The depression between two beach ridges.
SWASH
The rush of water up onto the beach face following the breaking of a wave. Also UPRUSH, RUNUP.
A-78
Appendix A Glossary of Coastal Terminology
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